1*27620987Smatt/* $NetBSD: atomic_nand_32.S,v 1.1 2014/09/03 19:34:25 matt Exp $ */ 2*27620987Smatt 3*27620987Smatt/*- 4*27620987Smatt * Copyright (c) 2014 The NetBSD Foundation, Inc. 5*27620987Smatt * All rights reserved. 6*27620987Smatt * 7*27620987Smatt * This code is derived from software contributed to The NetBSD Foundation 8*27620987Smatt * by Matt Thomas of 3am Software Foundry. 9*27620987Smatt * 10*27620987Smatt * Redistribution and use in source and binary forms, with or without 11*27620987Smatt * modification, are permitted provided that the following conditions 12*27620987Smatt * are met: 13*27620987Smatt * 1. Redistributions of source code must retain the above copyright 14*27620987Smatt * notice, this list of conditions and the following disclaimer. 15*27620987Smatt * 2. Redistributions in binary form must reproduce the above copyright 16*27620987Smatt * notice, this list of conditions and the following disclaimer in the 17*27620987Smatt * documentation and/or other materials provided with the distribution. 18*27620987Smatt * 19*27620987Smatt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20*27620987Smatt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21*27620987Smatt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22*27620987Smatt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23*27620987Smatt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24*27620987Smatt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25*27620987Smatt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26*27620987Smatt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27*27620987Smatt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28*27620987Smatt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29*27620987Smatt * POSSIBILITY OF SUCH DAMAGE. 30*27620987Smatt */ 31*27620987Smatt 32*27620987Smatt#include "atomic_op_asm.h" 33*27620987Smatt 34*27620987SmattENTRY_NP(_atomic_nand_32) 35*27620987Smatt1: l.lwa r11, 0(r3) /* load old value */ 36*27620987Smatt l.and r5, r11, r4 /* calculate new value */ 37*27620987Smatt l.xori r5, r5, -1 /* complement */ 38*27620987Smatt l.swa 0(r3), r5 /* try to store */ 39*27620987Smatt l.bnf 1b /* succeed? no, try again */ 40*27620987Smatt l.nop /* -- delay slot -- */ 41*27620987Smatt l.jr lr /* return old value */ 42*27620987Smatt l.nop 43*27620987SmattEND(_atomic_nand_32) 44*27620987Smatt 45*27620987SmattATOMIC_OP_ALIAS(atomic_nand_32,_atomic_nand_32) 46*27620987SmattATOMIC_OP_ALIAS(atomic_nand_uint,_atomic_nand_32) 47*27620987SmattATOMIC_OP_ALIAS(atomic_nand_ulong,_atomic_nand_32) 48*27620987SmattCRT_ALIAS(__sync_fetch_and_nand_4,_atomic_nand_32) 49*27620987SmattSTRONG_ALIAS(_atomic_nand_uint,_atomic_nand_32) 50*27620987SmattSTRONG_ALIAS(_atomic_nand_ulong,_atomic_nand_32) 51*27620987Smatt 52*27620987SmattENTRY_NP(_atomic_nand_32_nv) 53*27620987Smatt1: l.lwa r5, 0(r3) /* load old value */ 54*27620987Smatt l.add r11, r5, r4 /* calculate new value */ 55*27620987Smatt l.xori r11, r11, -1 /* complement */ 56*27620987Smatt l.swa 0(r3), r11 /* try to store */ 57*27620987Smatt l.bnf 1b /* succeed? no, try again */ 58*27620987Smatt l.nop /* -- delay slot -- */ 59*27620987Smatt l.jr lr /* return old value */ 60*27620987Smatt l.nop 61*27620987SmattEND(_atomic_nand_32_nv) 62*27620987Smatt 63*27620987SmattATOMIC_OP_ALIAS(atomic_nand_32_nv,_atomic_nand_32_nv) 64*27620987SmattATOMIC_OP_ALIAS(atomic_nand_uint_nv,_atomic_nand_32_nv) 65*27620987SmattATOMIC_OP_ALIAS(atomic_nand_ulong_nv,_atomic_nand_32_nv) 66*27620987SmattCRT_ALIAS(__sync_nand_and_fetch_4,_atomic_nand_32_nv) 67*27620987SmattSTRONG_ALIAS(_atomic_nand_uint_nv,_atomic_nand_32_nv) 68*27620987SmattSTRONG_ALIAS(_atomic_nand_ulong_nv,_atomic_nand_32_nv) 69